Charles joseph colling



(No Model.)

^ C. J. GOLLING.

METAL SHEARS.

No. 472,107. Patented Apr. 5, 1892.

wir" mm" I u auw Il I/ UNITED STATES PATENT EETCE.

ROBINSON da CO.,

OF SAME PLACE.

lNI `ETAL-SHEARS.

SPECIFICATION forming part of Letters Patent No. 472,107, dated April 5,1892. Application iiled August 7, 1891. Serial No. 401,997. (No model.)

To all whom it may concern:

' Be it known that I, CHARLES JOSEPH CoL- LING, a citizen of the UnitedStates, residing at Cincinnati, in the county of Hamilton and State ofOhio, have invented a new and useful Metal-Shear, of which the followingis a specification.

This invention relates to metal-shearing y machines; and the object ofthe present invention is to provide shears in which theleverage exertedalong the entire cutting-edge of the shearing-knives is equalized,thereby placing the strain equally4 upon both shearingblades, and to soplace the point of pivot of the swinging blade nearer the'line ofcutting, and thereby prevent dragging of the shears over the material tobe out, and thus avoiding the liability of breakage; and it has for afurther object to provide shears in which the springing of the same whenpressure is exerted upon the levers to cut the metal therein is entirelyavoided; and with these and other objects in view the invention consistsof the combination, with the ordinary stationary and swinging shears, ofa metalcutting device and the specially constructed and arrangedbearing-point or point of pivot Aof the swinging shears and thestrengthening and retaining hook, all of which are constructed andarranged in the novel manner hereinafter more fully described,illustrated'4 in the accompanying drawings, and specifically pointed outin the appended claims.

In .the accompanying drawings, Figure 'lisr a front elevation of ametal-shearing machine constructed in accordance with my invention. Fig.2 is a transverse sectional view of the same on line x a: of Fig. 1.-Fig. 3 is a transverse sectional view of thesame on line y y of Fig. 1.

Referring to the accompanying drawings, A designates the base-block ofthe casting and is provided with the ledge or flange a and a head-blockB, which are integrally cast to each other, and between said head-blockand baseblock is formed the usual opening, within which are located theshears, and which is adapted to admit'the insertion of the article to becut. Upon said ledge or liange is seated the stationary shear-holder C,provided with the slots o and the depending perforated lugs c', the saidslots or slotted perforations c being adapted to receive the bolts c2,that are adapted to pass through said shear-holder and `said ilange, andthus rmly secure said holder Said shear-holder is further provided withthev upwardly-extending side ange c5, to the side of which is secured bymeans of suitable bolts the stationary shear D, which, being rigidlysecured to said holder, is laterally adjustable to secure the adjustmentof the blades desired. The said head-block B ris provided along the sideadjacent to the said ledge or flange of the base-block with the recessedportion h, which is designed for the reception and Working therein ofthe swinging shear, and is further provided at the inner terminal ofsaid recess with a semicircular recessed bearing portion h', which isdesigned for the reception of the swinging shear-holder E. The swingingshear-holder E is provided at its inner end with an enlarged circularportion e, that is adapted to t snugly within the bearingrecess h at theinner terminal of said headblock, and said bearing end of the swingingshear-holder is provided with a segmental slot e', that is designed towork over the stationary pivot-bolt F, eccentrically located within saidbearing-recess, and by this connection it can be readily seen that thestrain upon the swinging shear is not directly placed upon the pivotthereof, which is usually centrally located at the inner end of theshear, but the whole strain is equally divided upon lthe pivot-boltworking in the segmental slot,

which also serves the function of a guide-- bolt, and the semicircularrecessed bearing portion in the head-block, and which construction alsoallows for an easy and an effective operation. The said shear-holder isprovided with a longitudinally-recessed portion e2 along one edgethereof, that is designed to accommodate the removable shear G,adjistably secured therein by means of the screws g. Theouter end of thehead-block IOO B is bifurcated, as at Il, within which is pivoted uponthe boltl the lever-socket J, which is designed to accommodate the endof the operating-lever K, which controls the swinging shear.Connecting-links L are pivoted to opposite sides of said lever-socketand to the outer free end of said swinging shear-holder, thus providinga connection between the operating-lever and the swinging shear-holder,by which a powerful leverage may be obtained and exerted.

The Width ofthe insertion of the metal between the shear-blades isregulated by the adjustable gage or stop M, which is laterallyadjustable upon its securing-bolt m, Within the longitudinal slot fm',located in the headblock B, and extends down to Within a short distancefrom the top of the stationary shearholder and shear, and thus preventsthe metal being inserted too far Within the machine, and the width ofcut, according to the material used, may be thus readily regulated. Thelength of cut is also regulated by means of the transverse stop or` gageN. The said transverse gage N is provided with a longitudinal shouldern, within which the ends of the metal to be cut are designed to rest,and is further provided With a perforated shank n', which adjustablyengages the laterally-adjustable carrying-rod O by means of theset-screw n2 passing through said perforated shank and engaging saidrod. The said rod is laterally adjustable within the perforation 0,transversely located in said base-block in the portion of the flangeupon which the stationary 'shear-holder and shear are secured, and isitself laterally adjustablefas described, and held in any desiredposition, according to the length of cuts desired to be made, by meansof the set-screw o', workinginto said perforation and biting said rodtransverse adjustable Within the perforation in the flange of thebase-block on which the adjustable stationary shear and shear-holder aresecured.

In order that there may be no springing of the shears or displacement ofthe parts of the machine during the operation of cutting, I provide thedevice with a strengthening and retaining hook P, used for retaining thevarious parts of the machine in their normal position, as described. Thesaid hook is pivoted upon the outer end of the pivot-bolt I, pivotingthe lever-socket Within the bifurcated end of the head-block, and,extending down and spanning the opening between the head and base block,terminates in an engaging shoulder p, that is designed to take under theouter end of the portion of the base-block directly beneath thestationary shear-holder and shear. Thus, as can be readily seen, thetendency to springing and straining the parts is avoided by placing thestrength equally upon the front strengthening-hook and the rear point ofpivot of the swinging shear.

The construction and operation of my improved shearing-rnachine arethought to be apparent without further description.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is-

l. In a metal-shearing machine, the combination, with the base-block andthe stationary shear thereon, of the head-block provided with a recessedportion having at its inner terminal a semicircular bearing-recess, aswinging shear provided with an enlarged semicircular end that isdesigned to fit and work within said semicircular recess, and asegmental slot adapted to Work over the pivot-bolt eccentrically locatedin said recess, substantially as set forth.

2. In a metal-shearing machine, the combination, with the base andhead-block and the stationary and swinging shear therein,of the swingingstrengthening and retaining hook pivoted to the outer or forward end ofsaid head-block and provided with a squared end or shoulder engagingbeneath the eXtreme outer end of the bed of said base-block,substantially as set forth.

3. The combination, with the base-block and the stationary shearthereon, of the headblock having a semicircular bearing-recess, aswinging shear provided with an enlarged circular end adapted to fit andwork within said semicircular recess and with a segmental slot adaptedto work over the pivot-bolt cccentrically located in said recess, andthe strengthening and retaining hook pivoted to the outer end of saidhead-block and providedv with a squared engagingshoulder that is adaptedto engage the bed of said baseblock directly beneath the stationaryshear-holder and shear thereon, substantially as set forth.

In testimony that I claim the foregoing as my own I have hereto ai'lixedmy signature in presence 0f two Witnesses.

CHARLES J OSEPII COLLING.

Vitnesses:

VINCENT SCHWAB, JAS. WILDER.

IOO

